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How can I identify what kind of resistors I have? Answered

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Recently I have been trying to identify and categorise all my scavenged electronic components.

I know how to identify the values and tolerances of the resistors by using the colour bands, but some of the resistors have different 'body' colours. I know the standard beige/brown ones are carbon film and metal film resistors are often blue. But I have some other colours, which I would guess are also metal film-but I don't know, they are all shown and labelled in the picture.

Let me know if you think you know what they all are.

From left to right:
1st is a standard carbon film
2nd I'm sure is a metal film resistor
3rd: ??its a slightly greeny aqua colour
4,5,6,7th:??? these are a torqoise green type colour
8th: ??? this is lime green

5 Replies

Jack A LopezBest Answer (author)2012-07-02

I think 4,5,6,7, and 8 are inductors, the kind made from very thin wire on a ferrite core.  Certainly they have some resistance too.  But that resistance probably will not match the color-code number on them. I think the coded number is supposed to be the self-inductance in microhenrys (uH)

I was trying to find a good picture of some more of these inductors that resemble resistors in appearance, and so far I found this:

and this:

Seems like those style of inductors are usually colored green for some reason, probably so that people won't get then confused with resistors.

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The green looking ones are inductors. The color is choosen so they are not confused with resistors. Look for an inductor color code chart to ID them.

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steveastrouk (author)2012-07-02

They all look like metal films.

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mdog93 (author)steveastrouk2012-07-02

Do you disagree that they might be inductors?

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steveastrouk (author)mdog932012-07-02

No. I have not seen them before. The inductors I use have always been SMT, or wound by me

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